conditional representation of logical numbers

Hello

Please I have the following time series { 111110011111000000011000011111} in time interval of seconds.

I want to use the following conditions on the sequence. Assuming 1 = True and 0 = false

if false is < 3 seconds and are inbetween two "true periods" then it is translated as 1

if true is < 3 seconds they are translated into 0

The answer when the condition is applied is

11111111111100000000000011111

I will be grateful if anyone assist me in writing this code

Thanks in advance

[Walter Roberson]

Original, with counts

111110011111000000011000011111
    5 2    5      7 2   4    5

Revised, with counts

11111111111100000000000011111
           C           C    5

where C = 12

In the original, the first groups have 5+2+5 = 12, and that is translated into 12 1's in the output.

In the original, the middle groups have 7+2+4 = 13, and that is translated into 12 0's in the output.

So the two 0's was translated into 2 1's for the first group, but the two 1's were translated to 1 0's for the second group.

However, your instructions seem to be symmetric about the translation. We cannot tell from your instructions whether you intend each of the false to be translated into individual 1's, or if you intend the stretch of 0 or 1 false to be translated into single 1, but we can expect you to be consistent about it... but you were not. The 0's each got translated to 1, but the stretch of 1's got translated to a single 0.

[Tino]

Hi Walter

The condition is as stated below

The 0's that are less than 3 length and are between two 1s are translated into 1.

The 1's that are less than 3 length and are between two 0's are translated into 0

I hope this is clear. Thanks in advance

[Walter Roberson]

But is 11100111 to be translated to 1111111 (the run is converted to a single 1), or is 11100111 to be translated to 11111111 (each 0 is to be translated to a 1) ? Your example result used both possibilities.

[Tino]

Hi Walter

Yes the possibility of both is implemented. In the first instance you gave

the 11100111 because zeros is surrounded by 1 then the new sequence is 11111111 ( 11 is converted to 00)

For the second instance 11100111 because it is surrounded by zeros and less than 3 length it is converted to 11 (00 is converted to 11)

Hope it is clear Walter

Answer 1

[David Hill]

a='111110011111000000011000011111';
a=strrep(a,'1001','111');
a=strrep(a,'101','111');
a=strrep(a,'010','000');
a=strrep(a,'0110','000');

[Tino]

Hi David

Thanks, but is there any way I can convert this String values to Matrix or array for computation purposes?

Thanks in advance

[Stephen23]

@Tino: try these:

b = a=='1'
b = a-'0'

[Tino]

Thanks Stephen